Sofa



FIG. 1 is a front elevational view of the sofa comprising my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevationalvieww being a mirror image;

FIG. 4 is a back elevational view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines showing leg memebers are for illustrative purposes onlyand form no part of the claimed design.

The ornamental design for a sofa, as shown and described.